Bronzing-machine.



A.J.FORD; BRONZING MACHINE.

-APPLIGATION FILED DEC. 3, 1908.

1,008,129, V Patented N0v.7, 1911 2 SHEETSSHEET 1.

W'z'inesses:

' A.J.PORD.

BRONZING MACHINE.

APPLICATION FILED DEC. 3, 1908. v

1,008,129. Patented Nov. 7, 1911 2 SHEETS-SHEET 2.

Wifines sea. M WM id borough of ,Manhattan,

snares Parana torsion.

ALBERT J- roan, or NEW mnion. 2., asslenonwonocns ANn-Lmemt-mimc'rua 'mecomramy, A'coRroRa'noN "or-newsman.

IBBOQNZING-MAGHINE.

Application filed Ilecemher3,.1968. Seria1.1\lo..465,805.

To. a'ZZ whomdtmaywoncem:

.Be it known-that I, ALBERT J .Fonn, a citizen of the United States, residing in the citypf New York, in thecounty of .New Yorktand State of New York, have'invented certain new and useful Improvements inzBronzing-Machines, of which the following !is a specification, reference being panying drawings, forming part thereof.

y invention-relatesto machines for applying bronze powders or similarm'aterials to the surface of paper or other fabrics in the process of printing the same.

.In using machines of the kind abovereferred to, it is customary to first print a sheet of paper with gum or other suitable adhesive in .the required pattern, and the sheet is then passed through the bronzing machine, which applies bronze powder to the entire face of the sheet. The powder clings to thegum or size, while a=dusting operation performed by the machine ,removes the powder from all the rest of the surface of the paper.

My invention relates particularly to the dusting operation above referred to, and one object of the invention is the complete and thorough dusting of the paper, and other objects are simplicity .of construction, reliability and effectiveness of operation of the feeding and dusting devices.

Other objects will appear from the following-description.

.In carrying out my invention, I use, incobperationfadusting roll having a surface ofcotton or other soft and yielding material,.and a feed roll engaging the paper oppositeto the dusting roll and having a surface of softrubber. Owingto the nature of the dusting roll and of the operation performed thereby, this roll can-not engage the paper with much pressure, and the engagement of the paper with the feed roll is coring of'the paper under these circumstances,

the dusting notwithstanding the fact that roll rotates much more rapidly and tends to expel'the paper before it has been completely dusted.

Other features of the invention will be set forth in connection with the description had therein to theaccomform, and-is rubbed in va high co-efiicient of friction.

of theembodiment .of the .invention illustrated in the accompanying-drawings.

I .will :now describe the machine illustrated in the drawings :and will thereafter point outuny invention .in claims.

Figure -1 is a side. elevation. ofa bronzing machine embodying the present invention, and rllig. 2 is an enlarged vertical section of a g portion of. the machine illustrating particularly the arrangement .of the dusting. apparatus.

Theillustrated embodiment o'fmy invention is:a bronzing machine'ofxa type :familiar to those skilled in the art, such a machine being illustrated, for example, in r the patent .to .Emmerich :and Vondeilehr,

.No. 613,857. ,It includes the usual cylinder '1, upon which the paper is carried during this cylinderrbeing the bronzing operation, provided with the usual grippers :2. The bronze powder. isv applied to .the paper by a feeding device 3 of ordinary or suitable byrthe usual bufling pads 4. ,After .the paper. ,passes .the lbu fiing pads,=it is dusted, as is common .in such-machines, by a dusting .roll 5, consisting ofceotton disks, which is rapidly rotatedby .sui-table gearing. The paper then passes dmder a felt-covered friction or drawing .roll 6 and is finally releasedby .thegrippers and is discharged from :the cylinder by :the usual stripper-fingers E7- 'The operations peculiar to the present invention are performed after thepaper'has left .the cylinder 1 as'above described. The back of=the paper is first dusted by .means of two rolls through which it passes from the stripper-fingers. The upper roll "8 Lisa 'feed .roll, and .it rotates at substantially the same surface speed as the cylinder .1. .Its

surface .is composed of soft rubber having The lower roll 9 isa dusting .rolland-may COI1SlSt:0f

disks oIf'cotton'clot-h or of -other,yielding material. TlllSiI'OlllOtfitQS much .faster than the feed roll 8,1.and'engagestheJpaper with the sameamount of pressure. Owingtothe higher frictional co-efiicient .of the mibber,

however, the movement of the ,paperiis controlled by the feed roll, and .not by dustin roll,-sothat the paperxemainsrunder the intfuenceiof the dustingsrolljlongenough 0 be thoroughly .dusted nu its reverse .stu ace. m

A further dusting operation is next per- The dusting rolls are all inclosed, as usual, in an air-tight casing 12 which retains the broze powder "removed by the rolls.

By the operation of my novel dusting devices the paper is discharged from the machine completely free, on both surfaces, from loose bronze powder, and thus the product of the machine is improved while economy in the use of the bronze powder is also secured.

Various modifications may be made in the embodiment of my invention hereinbefore described and illustrated in the accom anying drawings, within the nature of t e invention and the scope of the following claims.

I claim:

1. A bronzing machine comprising means for applying bronze powder to a sheet of paper, a dusting roll arranged to engage and dust one side of the paper, and a rubber feed roll arranged to engage and support the paper only at a point opposite to the dusting roll and to control the movement of the paper through friction alone.

2. A bronzing machine comprising means for' applying bronze powder to a sheet of paper, a dusting roll arranged to rotate rapidly in contact with one surface of the paper, and a feed roll of greater frictional co-efficient than the dusting roll arranged to engage the other surface of the paper only at a point opposite to the dusting roll and to control the movement of the paper through friction alone and to rotate more slowly than the dusting roll.

3. A bronzing machine comprising means for applying bronze powder to a sheet of paper, av rubber feed roll arranged to engage a limited portion only of one surface of the paper, such engagement being purely frictional, and a dusting roll arranged to engage the other surface of the paper opposite to the feed roll and to'rotate differentially with respect to the feedroll.

4. A bronzing machine comprising a cylinder for supporting a sheet of paper, means for applying-bronze powder to the paper when supported on the cylinder, a rubber feed roll receiving the paper from the cylinder, and a dusting roll engaging the paper opposite to the feed roll.

5. A bronzing machine comprising means for applying bronze powder to one surface of a sheet of paper, a feed roll arranged to receive'the paper after such application and to engage the bronzed surface, a dusting roll arranged to engage and dust the reverse surface of the paper opposite to the feed roll, and'to rotate more rapidly than the feed roll, a second feed roll arranged to engage the reverse surface of the paper, and

a second dusting .roll arranged to engage and dust the bronzed surface of the paper opposite to the second feed rolland to rotate more rapidly than the latter.

6. A bronzing machine comprising a cylinder for supporting a sheet of paper, means for applying bronze powder to a sheet of paper on the-cylinder, and means for dusting the paper after such application comprising a plurality of rubber feed rolls engaging opposite surfaces of the paper, and a pluralit of dusting rolls arranged to en gage'and dust the paper opposite to the feed rolls and to rotate more rapidly than the latter. p v

7. A bronzing machine comprising a cylinder for supporting a sheet of paper, means for applying bronze powder to a sheet of paper on 'the cylinder, roll cooperating with the cylinder, a feed roll arranged to engage the paper after its passage between the cylinder and the drawing roll and having a surface of soft rubber, a dusting roll arranged to engage the paper opposite to the feed roll and to press it lightly against the latter, and means for rotating the feed roll and the dusting roll arranged to rotate the latter more rapidly than the feed roll.

8. A bronzing machine comprising a cylinder for supporting a sheet of paper,

means for applying bronze powder to a sheet of paper on the cylinder, a drawing roll cooperating with the cylinder, a feed roll provided. with a soft rubber surface and arranged to engage the back of the sheet after its delivery from the cylinder, and a dusting roll of yielding material arranged to engage the bronzedsurface of the sheet opposite to the feed roll and to press the sheet lightly against the feed roll.

9. A bronzing machine comprising means for applying bronze powder to a sheet of paper, a dusting roll arranged to engage and dust one side of the paper, and a feed roll of greater frictional coefficient than the dusting roll and arranged to engage and support the paper only at a point opposite to the dusting roll and to control the movement of the paper through friction alone.

10. A bronzing machine comprising means a drawing efficient than the dusting roll and arranged to engage the other surface of the paper only at apoint opposite to the dusting roll and to control the movement of the paper through friction alone and to rotate differentially with respect to the dusting roll.

11. A bronzing machine comprising means for applying bronze powder to one surface of a sheet of paper, a feed roll arranged to receive the paper after such application and to engage the bronzed surface, a dusting roll arranged to engage and dust the reverse surface of the paper opposite to the feed roll and to rotate differentially with respect to the feed roll, a second feed roll arranged to engage the reverse surface of the paper, and a second dusting roll arranged to engage and dust the bronzed surface of the paper opposite to the second feed roll and to rotate differentially with respect to the latter.

12. A bronzing machine comprising a cylinder for supporting a sheet of paper, means for applying bronze powder to a sheet of paper on the cylinder, and means for dusting the paper after such applica-,

inder for supporting a sheet of paper, means for applying bronze powderto a sheet of paper on the cylinder, a drawing roll co-' operating with the cylinder, a feed-roll having a high frictional coefficient. and arranged to engage the paper after its passagebetween'the cylinder and the drawing roll, a dusting roll having a lower frictional coefficient than the feed roll and arranged to engage the paper opposite to the feed roll" and to press it lightly against the latter, and means for rotating the feedroll and the dust-ing roll atdifi'erent-ial rates ofrotation to frictionally control the movement of the paper by the feed roll While it is dusted by the dusting roll after leaving the cylinder.

14. Abronzing machine comprising a cylinder for su'pportinga sheet of paper, means for applying bronze powder to a sheet of paper on the cylinder, a drawing roll c0- operating with the cylinder, a feed roll having a high frictional coefiicient and arranged to engage the back of the sheet after its delivery from the cylinder, and a dusting roll havinga lower frictional coetficient than the feed roll and arranged to engage the bronzed surface of the sheet opposite to the feed roll and to press thesheet'lightly against the feed roll, so that the bronzed side of the sheet will be dusted after the sheet leaves the cylinder and -while it is controlled by the feed roll.

In testimony whereof I have afiixed my signature in presence of two Witnesses.

ALBERT J. FORD. Witnesses A. WV. HUDSON,

WILLIAM A. DEneAN.

v(Jopies of this patent may be obtained for fivecents each, by addressing the Commissioner of Patents,

Washington, D. G. 

